Illinois, Missouri Severe Flood Warning | Effective 06/17/2026 10:36

Headline: 
Flood Warning issued June 17 at 12:36PM CDT until June 21 at 7:51AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
June 17, 2026 - 10:36am
Expires: 
June 18, 2026 - 10:45pm
Description: 
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Mel Price LD. Mississippi River at Louisiana. Mississippi River at Clarksville. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Chester. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Chester. * WHEN...Until Sunday morning. * IMPACTS...At 28.0 feet, unleveed islands near Chester and the prison farm floods. * ADDITIONAL DETAILS... - At 12:00 PM CDT Wednesday the stage was 28.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:00 PM CDT Wednesday was 28.4 feet. - Forecast...The river is expected to rise to a crest of 28.7 feet early tomorrow afternoon. It will then fall below flood stage early Saturday morning. - Flood stage is 27.0 feet.
Instruction: 
Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Area Description: 
Jackson, IL; Randolph, IL; Perry, MO; Ste. Genevieve, MO
Forcast Office: 
NWS St Louis MO